After Duke Otto III of Pomerania-Stettin had died of the
plague in 1464, Frederick used his claim of suzerainty of Brandenburg over Pomerania, an issue which had never been clarified, to lay claim on Pomerania-Stettin. On 21 January 1466, the Dukes and the Elector concluded the
Treaty of Soldin, in which the Elector
enfeoffed the Dukes with Pomerania and they recognised him as their
liege lord. The Pomeranian Dukes, however, did not meet their treaty obligations and the conflict erupted again. In 1468, Brandenburg captured several Pomeranian towns on both sides of the
Oder. After an unsuccessful siege of
Ueckermünde, the two sides agreed to a cease-fire. Peace negotiations in
Piotrków Kujawski only resulted in an extension of the cease-fire. In May 1470, Eric II invaded the
Neumark and started looting. In the meantime, Emperor
Frederick III acknowledged the claims of Brandenburg. The emperor enfeoffed Frederick II with Pomerania-Stettin and ordered Eric II and Wartislaw X to recognise Frederick as their liege lord. Duke
Henry IV of Mecklenburg mediated, and at the end of May 1472, a lasting peace treaty was signed at
Prenzlau. The Dukes and the Estates of Pomerania had to pay homage to the Frederick II, who was also allowed to keep the territories he had conquered. The Dukes retained a number of law professors from the
University of Greifswald to review the peace treaty. Among them were
Johannes Parleberg,
Matthias von Wedel,
Sabel Siegfried the Younger,
Hermann Slupwachter, Johann Elzing, Heinrich Zankenstede, and
Georg Walter. Gerwin Rönnegarwe and Hertnidt vom Stein also played a role. == Aftermath ==